【单选题】产品的单位总成本为16元,假设制造商想在成本的基础上有20%的销售利润率,价格应制定为( )元。
【简答题】Deciding on a pricing policy for air freight presents airlines with many difficulties because freight consignments vary in( ).
【单选题】The news is ________that many a politician is gathering here in protest of the policy.